Fluorexone
荧光素配位剂(由不纯品calcein制得的纯品)
🗣️ 情景例句
Thanks, Grandpa.
谢谢你， 爷爷。
You were lucky to find it.
你的运气真好。
I don't know. I haven't made up my mind yet.
不知道。我还没下定决心呢。